Norwegian Institute Of Public Health

This study compares two colorectal cancer screening methods—a stool test and a scope exam—in 140,000 adults aged 50-74 in Norway. The goal is to see which approach works best to catch cancer early and reduce deaths. Participants are average-risk men and women living in specific a…

This study is testing whether portable HEPA air purifiers in primary school classrooms can reduce student absences. About 72 schools in Norway will take part, with some classrooms getting real purifiers and others getting fake ones. The goal is to see if cleaner air helps prevent…

This large study is testing whether screening with a flexible tube (sigmoidoscopy) can lower the number of colorectal cancer cases and deaths. About 100,000 men and women aged 50-64 in Norway are taking part. The researchers also want to see if adding a stool blood test helps, an…